ROLEX REF 6240 COSMOGRAPH DAYTONA
TROPICAL SUB-DIALS
Rolex, Cosmograph Daytona, case No. 1659488, Ref. 6240.
Made in 1967.
Very fine and rare, water-resistant, stainless steel wristwatch with black bezel, round button chronograph, registers,
tachometer and a stainless steel Rolex buckle.
Three-body, polished and brushed, tachometer graduation
on the black bezel to 200 units per hour, screwed-down
case back, crown and screwed-down buttons.
Bicolor silver and brown with applied steel baton indexes
and luminous dots, subsidiary dials for the seconds, the
12-hour and 30-minute registers, outer 1/5th seconds track.
Luminous steel baton hands.
Cal. 722, rhodium plated, 17 jewels, straight-line lever
escapement, monometallic balance adjusted to three
positions, shock absorber, self-compensating free-sprung
Breguet balance spring, Microstella regulating screws.